ORG?00H
AJMP?MAIN ORG?0BH AJMP?T0INT ORG?30HMAIN:?MOV?TMOD,#01H?;定時器方式1
MOV?TH0,#3CH?;50ms定時常數 MOV?TL0,#0B0H MOV?R0,#20?;中斷20次,1s SETB?EA SETB?ET0 SETB?TR0 AJMP?$T0INT:?MOV?TH0,#3CH
MOV?TL0,#0B0H DJNZR0,RTI MOV?R0,#20 CPL?P1.1;1s?P1.1求反壹次RTI:?RETI
END小問題,會要妳什麽命。給妳程序?,望好自為之。?
那就P1.0~P1.7各接壹LED
ORG?00H
AJMPMAIN
ORG?30H
MAIN:
MOV?P1,#00H
LCALLDELAY1S
MOV?P1,#0FFH
LCALLDELAY1S
AJMPMAIN
DELAY1S:?;誤差?0us
MOV?R7,#0A7H
DL1:
MOV?R6,#0ABH
DL0:
MOV?R5,#10H
DJNZR5,$
DJNZR6,DL0
DJNZR7,DL1
NOP
RET
END